fix reconnect alert fade and move it to core

public/src/sockets.js

@@ -165,7 +165,7 @@ app = window.app || {};
 
 			reconnectEl.tooltip('dispose');
 			reconnectEl.html('<i class="fa fa-check text-success"></i>');
-			reconnectAlert.addClass('hide');
+			reconnectAlert.removeClass('show');
 			reconnecting = false;
 
 			reJoinCurrentRoom();
@@ -202,7 +202,7 @@ app = window.app || {};
 
 		if (!reconnectEl.hasClass('active')) {
 			reconnectEl.html('<i class="fa fa-spinner fa-spin"></i>');
-			reconnectAlert.removeClass('hide');
+			reconnectAlert.addClass('show');
 		}
 
 		reconnectEl.addClass('active').removeClass('hide').tooltip({

src/views/admin/footer.tpl

@@ -5,8 +5,8 @@
 	{{{ if !isSpider }}}
 	<div class="">
 		<div component="toaster/tray" class="alert-window fixed-bottom mb-5 mb-md-2 me-2 me-md-5 ms-auto" style="width:300px; z-index: 1090;">
-			<div id="reconnect-alert" class="alert alert-dismissible alert-warning clearfix hide" component="toaster/toast">
+			<div id="reconnect-alert" class="alert alert-dismissible alert-warning fade" component="toaster/toast">
-				<button type="button" class="btn-close float-end" data-bs-dismiss="alert" aria-hidden="true"></button>
+				<button type="button" class="btn-close" data-bs-dismiss="alert" aria-hidden="true"></button>
 				<p>[[global:reconnecting-message, {config.siteTitle}]]</p>
 			</div>
 		</div>

src/views/partials/reconnect-alert.tpl

@@ -0,0 +1,4 @@
+<div id="reconnect-alert" class="alert alert-dismissible alert-warning fade" component="toaster/toast">
+	<button type="button" class="btn-close" data-bs-dismiss="alert" aria-hidden="true"></button>
+	<p>[[global:reconnecting-message, {config.siteTitle}]]</p>
+</div>